Oil Temperature Prediction and Vehicle Protection

a technology for oil temperature prediction and vehicle protection, applied in the field of vehicles, can solve problems such as limited vehicle performance, and achieve the effects of minimizing potential oil sump overheating, minimizing cost, and ensuring safety

Inactive Publication Date: 2008-08-21
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0009]An advantage of an embodiment is that an effective means for allowing maximum vehicle performance, while minimizing potential oil sump overheating, is provided. Only when the oil temperature is predicted to be above a predetermined threshold is vehicle performance limited. This is accomplished with minimal impact to cost, complexity, packaging, and durability.
[0010]An advantage of an embodiment is that overheating protection can be provided to a manual transmission without requiring the use of an active cooling system.

Problems solved by technology

Only when the oil temperature is predicted to be above a predetermined threshold is vehicle performance limited.

Method used

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  • Oil Temperature Prediction and Vehicle Protection
  • Oil Temperature Prediction and Vehicle Protection
  • Oil Temperature Prediction and Vehicle Protection

Examples

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Embodiment Construction

[0013]FIG. 1 illustrates a vehicle 20, having an engine 22 mounted therein. The engine 22 drives a manual transmission 24, which, in turn, drives a driveshaft 26. A differential 28 divides the power from the driveshaft 26 and sends the torque to the vehicle wheels 30 via rear drive axles 32. The transmission 24 has an oil sump 25 and the differential 28 has an oil sump 29. While a rear wheel drive vehicle 20 is illustrated, the present invention is applicable to a front wheel drive or all wheel drive vehicle as well.

[0014]The engine 22 includes a cooling system 34 having a radiator 36 with hoses 38 that direct coolant to and from the engine 22. An electronic control module (ECM) 40 (also called engine control module) may communicate 44 with a coolant temperature sensor 42 that provides temperature information relating to the coolant in the cooling system 34. The coolant temperature sensor 42 may interface with the cooling system 34 wherever is a desirable location in order to obtain...

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Abstract

A vehicle having an oil temperature prediction algorithm that allows for protection of the vehicle is disclosed. The algorithm may predict an oil sump temperature for a manual transmission and, upon reaching a first transmission heat threshold, enter a transmission protection mode.

Description

BACKGROUND OF THE INVENTION[0001]The present application relates generally to a vehicle having an oil temperature prediction algorithm that allows for protection of the vehicle.[0002]There are certain types of automotive vehicles that have powerful engines and are designed to be driven at high speeds for relatively long periods of time. Some of these vehicles may have manual transmissions and differentials where oil sumps are used for passive cooling and lubricating of the gears. The high power levels flowing through the driveline at sustained top speed operation, coupled with the lack of any active cooling for the oil in the sumps, can result in oil sump temperatures exceeding desired temperature limits. Thus, passive cooling may not be sufficient in some cases to keep the transmission or differential sump below the particular temperature limit for the full duration of high speed travel.[0003]For manual transmissions, one possible solution for preventing overheating is to provide a...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G01M15/04
CPCY10T477/6395G01M13/021
Inventor KARLSSON, ROLF B.
Owner GM GLOBAL TECH OPERATIONS LLC
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